Itvlx



A (H0 Model.) 4 Sheets-Sheet 1.

' H. R. PACKARD. MAGHINE FOR TRIMMING AND SHAPING THE HEADS 0F TASKS.No. 289,023

Patented Nov. 2'7, 1883 (No Model.) I 4 Sheets-Sheet 2. H. R. PACKARDMAGHiNE FOR TRIMMING AND SHAPING THE HEADS 0F TA0KS PatentedNov. 27,1883.

"W Ff n. nzrzns FMXo-lnhommr. Washington. 04 c.

4Shets8heet 3. H. R. PACKARD.

MAGHINEPOR TRIMMING AND SHAPING THE HEADS 0E TAOKS. N0. 289,023.- vPatented Nov. 27, 1883.-

(Na Model.)

WITNEESES 4 Sheets-Sheet 4.

D R A K O A P R H (No Model.)

MAGHINBFOR TRIMMING AND SHAPING THE HEADS OF TAGKS No. 289,023.

Patented Nov. 27,1883.

ink/ENTER WITNEESEE N. PETERS. PMw-Limupapher. Washington. 04 c.

UNiTnn STATES PATENT @FFHF.

HENRY R. PACKARD, OF TAUNTON, MASSACHUSETTS, ASSIGXOR OF ONE- HALF TOTHE ALBERT FIELD TACK COMPANY, OF SAME PLACE.

MACHINE FOR TRIMMING AND SHAPING THE HEADS OF TACKS.

SPECIFICATION forming part of Letters Patent No. 289,023, dated November2'7, 1883.

Application filed September 16, 1882. (No model i To all whom it mayconcern:

.Be it known that I, HENRY R. PACKARD, a citizen of the United States,residing at Taunton, in the county of Bristol and State ofMassachusetts, haveinvented certain new and useful Improvements inMachines for Trimming and Shaping the Heads of Tacks, Nails, and Rivets,of which the following is a full, clear, and exact description,reference being had to the IQ accompanying drawings, making part of thisspecification, in which Figure 1 is a perspective view of my improvedmachine for trimming and shaping the heads of tacks, nails, and rivets.Fig: 2- is a longitudinal vertical section through the center of thesame. Fig. 3 is a longitudinal vertical section taken through the centerof the chute and parts adjacent thereto. Fig. 4 is a plan of the underside of the machine. Fig.

5 is a plan (enlarged) of-the chute and mova ble carrying-nippers andparts adjacent thereto, the cover of the chute being removed. Fig. 6 isa plan (enlarged) of the lower end of the chute and mechanism connectedtherewith. Fig. '5 is aperspective view of the front portion of themachine. Fig. 8 is a plan of the movable carrying-nippers open. Fig. 9is a vertical section on the line or w of Fig. 8. Fig. 10 is a verticalsection on the line y of 0 Fig. 5. Fig. 11 is a vertical section on the0 them one at a time in a proper position to a pair of independentmovable nippers, which carry them to the punching-dies, which finallygive the heads the desired-form, as hereinafter fully described.

In the said drawings, A represents the bed or frame-w ork of themachine, from which rises a vertical standard or franie, B, in adovetailed way or groove, in the front of which slides a plunger, 0, tothe lower end of which is secured a die, 6, of the shape and size to begiven to the tack or nail head, the die I; being adapted to fit into acorrespondinglyshaped female die, 0, in a block, (I, secured to thebedA. The plunger 0 is actuated by a lever, D, having its fulcrum at e, andto the rear end of the long arm of this lever is pivoted a bifurcatedarm, G, which embraces the drivingshaft H, which latter runs in bearingssecured to the bed A, and carries a balance-wheel, I, and a cam, f,which latter acts upon a friction-roll, g, secured to a stud projectingfrom the face of the arm G, which is thus raised by the cam to cause theplunger 0 to descend with the die b, the lever and arm descending bytheir own gravity, assisted by a spring, if

desired, to raise the die Z) as soon as the point of the cam passes fromunder the roll Extending out from one side of the bed A, and forming anangle therewith, is a table, K, within suitable guides, on the uppersurface of which fits a slide or carriage, L.

Between two standards, h, at one end ofcarriage L, is pivoted on a pin,18, a lug project ing from the under side of an inclined chute or way,M. Said chute is composed of a plate, '5, and two parallel bars orplates, 7c 7v, set edgewise at such distance apart as to leave a space,19, between them for the reception of the shank of the tack or nail, thehead of which rests upon the upper edges of the plates 7: 7c. The upperend of the chute M is provided with inclined or flaring side pieces, Z,Fig. 11, to which are secured byscrews 20, passing through slots 21, apair of auxiliary inclined plates, m, which form a hopper or receiverfor the tacks or nails to be dropped into. These plates in have theirlower edges, 22, beveled, so as to lie in vertical planes, and are setback from the edges of the space or opening 19 between the platessufiiciently to squarely and freely admit the head of a tack or nail, sothat if the tack or nail drops head first into this space between theplates it, with its shank uppermost, as seen in Fig. 11, the shank willbe enabled to turn over and be worked into its proper position, with itsshank in the space 19, by the jar of the machine, and thus be preventedfrom turning sidcwise and lying with its shank against either side ofthe receiver and its head corncrwise in the space or guide way, andsliding down in this position without being able to turn over, asillustrated in Fig. 12, as would be the case if the plates m were notemployed, the shank of the tack or nail, if uppermost, being always heldin a position in line with the space 19. By making the plates anadjustable upon the side pieces, 1, by means of the screws and slots 21,the distance apart of their lower edges, 22, may be varied toaccommodate tack or nail heads of di lferent diameters.

The slide L is reciprocated in its guideway, for a purpose to behereinafter described, by a pitman, N, one end of which is pivoted to acrank-pin on the face of a disk, at, at one end of the driving-shaft H,the opposite end of the pitman, which is bifurcated, embracing and beingpivoted to a block, 1), which is pivoted upon the lower end of a studprojecting down from the under side of the slide L through alongitudinal slot, q, in the table K.

To a plate, 0", on one side of the chute M is secured a bar, which formsa cover for the chute, and is arranged at such distance above it as notto interfere with the sliding of the heads of the tacks which rest onthe upper beveled. as seen in Figs. 5 and 6.

or press against the head of the outermost tack.

of the line and retain it in that position, for a purpose to behereinafter described. The upward movement of the lever Q is limited bya screw, a, the'lower end of which is adapted to strike the bar P whenthe lower end of the lever is raised.

To a lug on the inner side of the chute Mis pivoted an arm, 1;, providedat its outer end with a hook or finger, w, which lies immediately underthe nose of the chute, and when forced inward by a spring, a, forms astop for the front or foremost tack of the line in the chute to strikeagainst. To a lug on the front side of the chute is pivoted a bell-cranklever, 12, having at its outer end a finger, c, which lies immediatelyunder the nose-piece of the chute, in the same plane as the finger w,the outer side of the point of this finger a being To the short arm ofthis lever b is pivoted one end of a fiat bar, d, the opposite end ofwhich is provided with a slot, 17, within which fits a screw, 23,projecting from the top of a vertical post, 6, rising from a piece, f,secured to and made adjustable upon the table K by means of a screw, 24,passing through a slot, and thus as the slide L and chute M are movedforward the rear end of the slot 17 is brought into contact with thescrew 23, and as the slide continues to move in the same direction thelever 12 is moved on its fulcrum in such a manner as to withdraw thefinger c from under the end of the chute. WVhen, however, the slide andchute are moved in the opposite direction, a

spiral spring, 9, attached to the chute and the bar (1, holds the latterstationary fora short time and causes the finger c to be thrown forwardunder the end of the chute, after which the chute and bar d movebackward together, which movement is permitted by the slot 17. As thetacks slide down the chute M, the forem 0st one is arrested by thefinger w, and the slide and chute, being at the end of the forwardstroke, now commence to move back ward, which causes the finger c to bemoved inward, as previously explained, its point pass ing between theshanks of the two lower tacks, thus serving-to hold back the whole lineof tacks above the lowest tack, while the bevel of the outer side of thefinger 0 serves to press the outermost or lowest tack down to the verybottom of the chute. against the rounded end of the finger 10, whichyields against the resistance of its spring a, to allow the tack to passit, and in this position it is held by the projection s on theretaining-lever Q, with its point projecting down from the lower end or.nose of the chute, as seen in Fig. 3. After the slide or carriage L hasbeen drawn back to the 7 end of its stroke, it is moved forward with thechute, for the purpose of depositing this lowest tack within a pair ofmovable carryingnippers, h, to be hereinafter described, which areadapted to receive the tack or nail from the chute and deliver it to thetrimming or shaping dies 1) a, previously described. In order toproperly deposit the tack within the aperture 25 at the end'of thenippers h, it becomes necessary to raise the lower end of the chute asit advances, to lift the point of the tack above the nippers and allowit to be deposited therein, when the chute again drops to its formerposition. This rise and fall of the chute is effected in the followingmanner:

To an angular projection, 26, on the front side of the chute is securedby means of a screw, i, an oscillating disk, It, provided on its underside with a ratchet-tooth, I, Fig. 1., and on its upper side with aprojection, m, the straight side of which bears against a stoppin, 27,on the projection 26, which holds the disk from revolving, and, as thechute advances, the inclined or rounded side of the tooth Z rides up ona pin, 28, projecting from the table K, and thus raises the chute on itspivot 18, as required, the chute dropping down to its original positionas soon as the point of the tooth 1 passes the pin 28. This dropping ofthe nose or lower end of the chute takes place at the termination of theforward movement of the carriage L,when thepoint of the tack is directlyover the aperture 25 of the nip pers, and serves to accurately place ittherein. While the end of the chute is being raised, the finger c iswithdrawn, which releases the line of tacks, and at the same time allowsthe finger w to be forced inward by its spring a, to catch and hold theforemost tack. As the carriage L and chute commence to move backward,the tack whose shank is in the aperture 25 of the nippers is drawn outfrom between assume ll l lllllllllll l ll lllllll til i. ll,

chute and the projection s of the lever Q, and

left in the nippers, to be carried to the dies,

and the finger c is at'the same time forced inward, as before described,between the shanks of the two lower tacks, to hold back the line, andpress outward the lowest tack to the en'- treme end of the chute, whenthe operation continues as before, a tack being deposited in IQ thenippers at each forward and downward movement of the chute.- As thechute is drawn back, the contact of the straight side of the teeth Zwith the pin 28 causes the disk 7;

to be oscillated against the resistance of a r 5* light spring, 29,until this side of the tooth Z assumes such an angle as will allow it toride up over and clear thepin 28, when the spring 29 will oscillate thedisk in the contrary direction, until it is arrested by the contact ofthe projection in with the stop-pin 27, when the tooth Z will be held ina proper position to again ride up over the pin 28 on the next forwardmovement of the chute, as before described.

n. Fig. 3 ,is aset-serew,which projects up vertically from the slide L,and forms an adj usta- I ble stop for the chute to rest upon and droponto when released by'the tooth Z dropping off the pin 28, and, by meansof this screw in the distance of the lower end of the chute above thenippers may be adjusted wlth the reatest nicet I a In case the ,{Qointof a tack or nail should not lie directly .o icr the aperture in the 3 5movable carrying-nippers when the end of the chute drops, but shouldstrike the face of the nippers close to the aperture, the leverQ,

resting on the head Of the tack, would yield u ward against theresistance oi the spring t, 40 until arrested by the contact of theset-screw a with the bar P, when the pressure of the projection swilltend to cause the point of the tack to slide down the inclined orcountersunk sides ofthe aperture 25, as desired. i

In case the end of the finger a should strike squarely against thecenter of the shank of it tack or nail while being forced111ward,orn1eet with any other obstruction on the withdrawal of thechute M, the slot 17 in the bar (1 will I allow the latter to move-overthe sorewQS, thus avoiding breakage or injury of the mechanism, as wouldoccur if the end of the bar cl were secured inirnovably to the post e.

I will now describe the construction of the movable carryingmippers itand their mode of operation. The jaws of these nippers are of the formshown, each having formed in its l outer and oreinlf of t I I theaperture 25, which ,i

lllllll ll In, will l in ml l m] near the center of its length to thisshaft. In a conical recess at one end of the lever q fits the pointedend of a long rod or push-bar, T, the opposite end of which is alsopointed, and rests in a conical recess in the head of a screw, r, madeadjustable in thelower end of alever, V, pivoted to a curved standard orbracket, 7 5 s, on the bed A, and carrying a friction-roll, t, whichbears against the face of a cam, 11, on the driving-shaft H, and thus,as the shaft rotates, the cam c at the proper time moves the lever V andpushes the rod Tin the direction of the arrow, Figs. 1 and at, whichmoves the lever q against the resistance of a spiral spring, 10, one endof which is secured to the lever and the other end to the bed A, thereturn movement of the levers V and rod T in a direction contrary to thearrow being effected by the spring 14: when permitted by the cam 1:.These movements of the lever q are communicated to the rock-shaft R,which thus causes the nippers h to be swung over to one side, to receivethe tack or nail from the chute M, as before described, and then backagain, to deliver the said tack or nail to the trimning and shaping diesZ) c, the jaws of the nip pers being kept closed during this movement 5by a light spring, (1?, and being maintained in their proper centralposition by astop-pin, b projecting up from the cross-bar 1), againstwhich the stocks 30 of the nippers strike when thrown toward each otherby the spring a. When the lever q is retracted by the spring it, its end31 brought into contact with a set-screw or stop, 32, projecting from alug on the under side of the bed A, which can thus be adjusted to arrestthe nippers, with their aperture 25 directly over the center of thelower die, 0, as required, to allow the point of the tack to enter thecavity of the said die, and by adjusting the screw r at the lower end ofthe lever V the movement of the nippers in the opposite direction can beregulated with great nicety to cause them to stop when the aperture 25is exactly in line with the space or way 1.9 of the chute M. Theabove-described movable carrying-nippers h are thus made entirelyseparate from the chute M, and are operated independently thereof bydifferent mechanism, the movements of the nippers and chute beingaccurately timed with respect to each other and the trimming and shapingdies to produce the desired result.

I will now describe the manner in which the nippers h are opened torelease the tack or nail therein and allow it to drop into the lawordie, a. h tarmac, attain! 1 I r r ll l l. i

retort I25 I l

